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I upgrade NodeJS to 24.13.0. Can we reinstall the Bun dependencies?

January 14, 202610:10 AM – 9:01 AM(94h 50m)404 turns
Model: claude-opus-4-5-20251101, <synthetic>
Bash812Edit454Read407Write105TodoWrite92Glob70Grep58AskUserQuestion19WebFetch19WebSearch15Task13KillShell10ExitPlanMode8Skill3TaskOutput1
11:45 AM

OK. Now let's start on the main website. Please remove all existing content and just have a single login button. Let's get that working first. Where are the instructions for setting up Azure authentication? I'll work on that.

I'll simplify the home page to just a login button. The login page already has the Microsoft sign-in form.

Home page simplified to just a title and login button.

Azure AD Setup Instructions:

  1. Go to Azure Portal → Microsoft Entra ID → App registrations → New registration

  2. Configure the app:

    • Name: "Using and Understanding AI" (or similar)
    • Supported account types: "Accounts in this organizational directory only" (single tenant)
    • Redirect URI: Select "Web" and enter: 
      https://[local-hostname]/api/auth/callback/microsoft-entra-id

  3. After registration, note these values:

    • Application (client) ID → AZURE_AD_CLIENT_ID
    • Directory (tenant) ID → AZURE_AD_TENANT_ID

  4. Create a client secret:

    • Go to Certificates & secrets → New client secret
    • Copy the Value (not the ID) → AZURE_AD_CLIENT_SECRET

  5. Add these to your [local-hostname]:

    AZURE_AD_CLIENT_ID=your-client-id
AZURE_AD_CLIENT_SECRET=your-client-secret
AZURE_AD_TENANT_ID=your-tenant-id

  6. Optional: Configure API permissions if you need Microsoft Graph access (email, profile are usually default).

Read3Glob2Write1
11:49 AM

Done. I moved things that are not secrets into .env.development. Can you check [local-hostname] and .env.development and comment both?

I see the files. A few observations:

  1. [local-hostname] has AZURE_AD_CLIENT_SECRET but the auth also needs AZURE_AD_CLIENT_ID and AZURE_AD_TENANT_ID
  2. .env.development has AZURE_CLIENT_ID and AZURE_TENANT_ID (without _AD_) - these appear to be for the communication tools, not NextAuth

The auth.ts file uses AZURE_AD_* variables. Should I add AZURE_AD_CLIENT_ID and AZURE_AD_TENANT_ID to .env.development (they're not secrets), or are they the same values as AZURE_CLIENT_ID/AZURE_TENANT_ID?

Added comments to both files.

Important: The auth config (apps/web/auth.ts) uses AZURE_AD_CLIENT_ID and AZURE_AD_TENANT_ID, but I only see AZURE_CLIENT_ID and AZURE_TENANT_ID in .env.development. Are these the same app registration, or separate ones?

If same, you can either:

  1. Add AZURE_AD_CLIENT_ID and AZURE_AD_TENANT_ID to .env.development with the same values
  2. Update auth.ts to use AZURE_CLIENT_ID and AZURE_TENANT_ID
Read2Edit2
11:51 AM

Yeah, we're using the same app registration for both. Let's update auth.ts.

Updated both files to use consistent AZURE_* naming:

  • auth.ts: Now uses AZURE_CLIENT_ID, AZURE_CLIENT_SECRET, AZURE_TENANT_ID
  • [local-hostname]: Renamed AZURE_AD_CLIENT_SECRET to AZURE_CLIENT_SECRET

The turbo.json already has AZURE_* in globalPassThroughEnv, so these will be passed through correctly.

Edit2
11:52 AM

Read more: https://nextjs.org/docs/app/api-reference/config/next-config-js/allowedDevOrigins @repo/web:dev: GET /api/auth/session 200 in 505ms (compile: 492ms, proxy.ts: 4ms, render: 10ms) @repo/web:dev: GET /api/auth/session 200 in 8ms (compile: 3ms, proxy.ts: 2ms, render: 2ms) @repo/web:dev: x-forwarded-host header with value [redacted] does not match origin header with value [local-hostname] from a forwarded Server Actions request. Aborting the action. @repo/web:dev: ⨯ Error: Invalid Server Actions request. @repo/web:dev: at ignore-listed frames { @repo/web:dev: digest: '4044675073@E80' @repo/web:dev: } @repo/web:dev: POST / 500 in 150ms (compile: 1518µs, proxy.ts: 3ms, render: 146ms)

Need to add allowedDevOrigins to the Next.js config for the local proxy setup.

Added allowedDevOrigins to allow requests through your NGINX proxy. Restart the dev server and try again.

Edit1
11:53 AM

Same problem: ✓ Starting... @repo/web:dev: ✓ Ready in 427ms @repo/web:dev: GET / 200 in 425ms (compile: 148ms, proxy.ts: 137ms, render: 140ms) @repo/web:dev: GET /api/auth/session 200 in 498ms (compile: 485ms, proxy.ts: 3ms, render: 10ms) @repo/web:dev: GET /api/auth/session 200 in 9ms (compile: 4ms, proxy.ts: 3ms, render: 2ms) @repo/web:dev: GET / 200 in 28ms (compile: 1998µs, proxy.ts: 4ms, render: 22ms) @repo/web:dev: GET /api/auth/session 200 in 9ms (compile: 4ms, proxy.ts: 3ms, render: 2ms) @repo/web:dev: GET /api/auth/session 200 in 7ms (compile: 2ms, proxy.ts: 2ms, render: 2ms) @repo/web:dev: x-forwarded-host header with value [redacted] does not match origin header with value [local-hostname] from a forwarded Server Actions request. Aborting the action.

Need to also add [redacted] to the allowed origins.

Edit1
11:53 AM

Wait, do I need to adjust the local NGINX configuration here? Would that help?

Yes, that would be cleaner. The issue is NGINX is setting X-Forwarded-Host: host.docker.internal:2000 instead of preserving the original host.

In your NGINX config, make sure you have:

proxy_set_header Host $host;
proxy_set_header X-Forwarded-Host $host;

This will forward [local-hostname] as the forwarded host instead of the internal Docker hostname.

11:54 AM

AADSTS500113: No reply address is registered for the application.

You need to add the callback URL to your Azure app registration.

In Azure Portal → App registration → Authentication → Add a platform (or edit existing Web platform):

Redirect URI:

https://[local-hostname]/api/auth/callback/microsoft-entra-id
11:56 AM

CallbackRouteError: Read more at https://errors.authjs.dev#callbackrouteerror @repo/web:dev: [auth][cause]: TypeError: getUserByAccount is not a function @repo/web:dev: at Module.callback (/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/b1556_@auth_core_7c068a08._.js:3838:39) @repo/web:dev: at process.processTicksAndRejections (node:internal/process/task_queues:103:5) @repo/web:dev: at async AuthInternal (/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/b1556_@auth_core_7c068a08..js:4844:24) @repo/web:dev: at async Auth (/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/b1556_@auth_core_7c068a08._.js:5091:34) @repo/web:dev: at async AppRouteRouteModule.do (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/compiled/next-server/app-route-turbo.runtime.dev.js:5:37866) @repo/web:dev: at async AppRouteRouteModule.handle (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/compiled/next-server/app-route-turbo.runtime.dev.js:5:45156) @repo/web:dev: at async responseGenerator (/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/39430_next_aca3c46c..js:16647:38) @repo/web:dev: at async AppRouteRouteModule.handleResponse (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/compiled/next-server/app-route-turbo.runtime.dev.js:1:187713) @repo/web:dev: at async handleResponse (/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/39430_next_aca3c46c._.js:16710:32) @repo/web:dev: at async Module.handler (/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/39430_next_aca3c46c._.js:16763:13) @repo/web:dev: at async DevServer.renderToResponseWithComponentsImpl (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/base-server.js:1422:9) @repo/web:dev: at async DevServer.renderPageComponent (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/base-server.js:1474:24) @repo/web:dev: at async DevServer.renderToResponseImpl (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/base-server.js:1524:32) @repo/web:dev: at async DevServer.pipeImpl (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/base-server.js:1018:25) @repo/web:dev: at async NextNodeServer.handleCatchallRenderRequest (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/next-server.js:395:17) @repo/web:dev: at async DevServer.handleRequestImpl (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/base-server.js:909:17) @repo/web:dev: at async /www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/dev/next-dev-server.js:387:20 @repo/web:dev: at async Span.traceAsyncFn (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/trace/trace.js:157:20) @repo/web:dev: at async DevServer.handleRequest (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/dev/next-dev-server.js:383:24) @repo/web:dev: at async invokeRender (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/lib/router-server.js:248:21) @repo/web:dev: at async handleRequest (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/lib/router-server.js:447:24) @repo/web:dev: at async requestHandlerImpl (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/lib/router-server.js:496:13) @repo/web:dev: at async Server.requestListener (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/server/lib/start-server.js:226:13) @repo/web:dev: [auth][details]: { @repo/web:dev: "provider": "microsoft-entra-id" @repo/web:dev: }

The error is with the database adapter - getUserByAccount is not implemented. Let me check the adapter.

The adapter requires a database connection. Since you're using JWT strategy and just want to test login, we can remove the adapter for now. This means no persistent user storage, but login will work.

Read2Edit1
11:57 AM

Wait, I don't understand what we're doing here. I'd like to get the development server fully working. It sounds like that means setting up a database server? Shouldn't that be started by bun dev?

You're right to question this. Let me understand the current database setup.

You're right. The project uses PostgreSQL but there's no docker-compose to start it. You have two main options:

Option 1: Add Docker Compose (recommended)

  • Add a docker-compose.yml that starts PostgreSQL
  • Update bun dev to start the database alongside the apps
  • Proper development setup with persistent users

Option 2: JWT-only for now

  • Remove the database adapter temporarily
  • Auth works via JWT tokens stored in cookies
  • No persistent user records, but login/logout works
  • Add database later when you need user persistence

Which approach would you prefer? Option 1 is more complete but requires Docker. Option 2 gets you a working login flow immediately.

Read3Glob2
11:58 AM

What do you mean by persistent users?

With the database adapter, when someone logs in:

  • A users record is created in PostgreSQL (id, email, name, role)
  • An accounts record links their Microsoft identity to that user
  • You can query users, assign roles, track activity, etc.

With JWT-only (no adapter):

  • Login works - user gets a session cookie with their info from Microsoft
  • But nothing is stored in your database
  • Each login is "fresh" - you can't look up users, assign roles, or build features that need user records

If your app just needs "is this person logged in with a valid university email?" then JWT-only works fine. If you need "show me all users" or "make this user an admin" or "track what this user has done", you need the database.

What features do you need for the course website?

11:59 AM

Let's just do this right. Please add a docker compose configuration for PostgreSQL.

Write1
11:59 AM

OK, continue.

Done. Here's the setup:

New commands:

  • bun run db:start - Start PostgreSQL in Docker
  • bun run db:stop - Stop PostgreSQL
  • bun run db:push - Sync schema to database (creates tables)
  • bun run db:studio - Open Drizzle Studio (database GUI)

To get started:

bun run db:start     # Start PostgreSQL
bun run db:push      # Create the tables
bun run dev          # Start the dev servers
Read3Edit2Write1Glob1
12:00 PM

Can we specify an exact PostgreSQL version?

Updated to postgres:17.7 (latest as of November 2025).

WebSearch1Edit1
12:01 PM

Can bun dev just start everything including services provided by docker-compose? It would be nice to just run one command.

Done. Now bun run dev will start PostgreSQL (if not already running) before starting the dev servers.

Edit1
12:02 PM

Same problem: [auth][error] CallbackRouteError: Read more at https://errors.authjs.dev#callbackrouteerror @repo/web:dev: [auth][cause]: TypeError: getUserByAccount is not a function @repo/web:dev: at Module.callback (/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/b1556_@auth_core_7c068a08._.js:3838:39) @repo/web:dev: at process.processTicksAndRejections (node:internal/process/task_queues:103:5) @repo/web:dev: at async AuthInternal (/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/b1556_@auth_core_7c068a08..js:4844:24) @repo/web:dev: at async Auth (~/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/b1556@auth_core_7c068a08._.js:5091:34)

Did you run bun run db:push to create the tables? But let me also check - the adapter might need the schema passed to it.

The adapter needs the schema tables passed to it. Let me fix that.

The schema should be exported. Now make sure you've pushed the schema to the database:

bun run db:push

Then restart the dev server. Did you run db:push earlier?

Read3Edit1
12:03 PM

[12:03:08 challen@blueshift:/www/usingandunderstanding.ai] $ bun db:push $ bun run --cwd packages/db db:push $ drizzle-kit push No config path provided, using default 'drizzle.config.ts' Reading config file '/www/usingandunderstanding.ai/packages/db/drizzle.config.ts' Using 'postgres' driver for database querying [✓] Pulling schema from database... PostgresError: type "vector" does not exist at ErrorResponse (file:///www/usingandunderstanding.ai/node_modules/.bun/postgres@3.4.8/node_modules/postgres/src/connection.js:815:30) at handle (file:///www/usingandunderstanding.ai/node_modules/.bun/postgres@3.4.8/node_modules/postgres/src/connection.js:489:6) at Socket.data (file://~/www/usingandunderstanding.ai/node_modules/.bun/postgres@3.4.8/node_modules/postgres/src/connection.js:324:9) at Socket.emit (node:events:508:28) at addChunk (node:internal/streams/readable:559:12) at readableAddChunkPushByteMode (node:internal/streams/readable:510:3) at Readable.push (node:internal/streams/readable:390:5) at TCP.onStreamRead (node:internal/stream_base_commons:189:23) { severity_local: 'ERROR', severity: 'ERROR', code: '42704', position: '186', file: 'parse_type.c', line: '270', routine: 'typenameType' }

The schema uses a vector type (pgvector extension) for embeddings. Let me check which schema uses it.

The schema uses pgvector for RAG embeddings. We need to use a PostgreSQL image with pgvector. Let me update docker-compose.

Yes, we need to create the extension in the database. Let me add an init script.

Edit2Read1Write1
12:03 PM

No, wait. That version probably has it.

The pgvector image includes the extension binaries, but you still need to run CREATE EXTENSION vector; to enable it in the database. The init script does that automatically on first container start.

You'll need to remove the existing container to pick up the new image and run the init script:

bun run db:stop
docker volume rm usingandunderstanding-ai_postgres_data  # Reset data
bun run db:start
bun run db:push
12:04 PM

[12:04:31 challen@blueshift:/www/usingandunderstanding.ai] $ bun run db:push $ bun run --cwd packages/db db:push $ drizzle-kit push No config path provided, using default 'drizzle.config.ts' Reading config file '/www/usingandunderstanding.ai/packages/db/drizzle.config.ts' Using 'postgres' driver for database querying [⣷] Pulling schema from database... { severity_local: 'WARNING', severity: 'WARNING', code: '01000', message: 'database "usingandunderstanding" has a collation version mismatch', detail: 'The database was created using collation version 2.41, but the operating system provides version 2.36.', hint: 'Rebuild all objects in this database that use the default collation and run ALTER DATABASE usingandunderstanding REFRESH COLLATION VERSION, or build PostgreSQL with the right library version.', file: 'postinit.c', line: '492', routine: 'CheckMyDatabase' [✓] Pulling schema from database... PostgresError: type "vector" does not exist at ErrorResponse (file:///www/usingandunderstanding.ai/node_modules/.bun/postgres@3.4.8/node_modules/postgres/src/connection.js:815:30) at handle (file:///www/usingandunderstanding.ai/node_modules/.bun/postgres@3.4.8/node_modules/postgres/src/connection.js:489:6) at Socket.data (file://~/www/usingandunderstanding.ai/node_modules/.bun/postgres@3.4.8/node_modules/postgres/src/connection.js:324:9) at Socket.emit (node:events:508:28) at addChunk (node:internal/streams/readable:559:12) at readableAddChunkPushByteMode (node:internal/streams/readable:510:3) at Readable.push (node:internal/streams/readable:390:5) at TCP.onStreamRead (node:internal/stream_base_commons:189:23) { severity_local: 'ERROR', severity: 'ERROR', code: '42704', position: '186', file: 'parse_type.c', line: '270', routine: 'typenameType' }

The old volume still has data without the extension. Need to fully reset:

docker compose down -v
bun run db:start
bun run db:push

The -v flag removes the volume so the init script runs on fresh start.

12:05 PM

Bingo.

Now try the login again - the database should be ready with all the tables and the vector extension.

12:05 PM

Same problem: POST / 303 in 161ms (compile: 4ms, proxy.ts: 7ms, render: 150ms) @repo/web:dev: [auth][error] CallbackRouteError: Read more at https://errors.authjs.dev#callbackrouteerror @repo/web:dev: [auth][cause]: TypeError: getUserByAccount is not a function @repo/web:dev: at Module.callback (/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/b1556_@auth_core_7c068a08._.js:3838:39) @repo/web:dev: at process.processTicksAndRejections (node:internal/process/task_queues:103:5) @repo/web:dev: at async AuthInternal (/www/usingandunderstanding.ai/apps/web/.next/dev/server/chunks/b1556_@auth_core_7c068a08._.js:4844:24)

The Proxy wrapper might be causing issues. Let me simplify the adapter.

Let me check how the adapter is being used in auth.ts and try calling getAdapter() directly instead of using the Proxy.

Try again - using getAdapter() directly instead of the Proxy wrapper.

Read2Edit1
12:06 PM
12:08 PM

Can you start the development server so you can read the debug logs? It's a lot.

Server is running. Please try logging in now, and I'll read the debug logs after.

Bash2
12:08 PM

No, it's broken in your environment, with DATABASE_URL not set. Let me restart you.

No response requested.

12:08 PM

Try now.

The logs look successful:

  1. OAuth authorization completed - got your user data (Geoffrey Werner Challen, [email])
  2. adapter_getUserByAccount was called (the method that was failing before)
  3. Session cookie was created
  4. Callback returned 302 redirect

Did it work? Were you redirected to the dashboard or did you still get an error page?

Bash7
12:10 PM
12:11 PM
12:12 PM

OK. But now when I log in I just end up at the login page again with a sign in dialog.

The flow shows:

  1. Callback succeeded → 302 to /dashboard
  2. Dashboard → 307 redirect to /login
  3. Login page loads

The session isn't being recognized. Let me check the cookie domain setting.

Found it. The cookie domain is set to localhost but you're using [local-hostname]. The cookie isn't being sent because the domains don't match.

Updated the cookie domain to [local-hostname]. Clear your cookies for that domain and try logging in again.

Bash1Read1Edit1
12:13 PM

Bingo.

Excellent! Login is working. Let me kill the background dev server and disable debug mode.

Done. Authentication is working. Summary of what we fixed:

  1. Docker Compose with pgvector for PostgreSQL
  2. Drizzle adapter configured with schema tables
  3. NGINX proxy buffers for large auth headers
  4. Cookie domain set to [local-hostname] for development
KillShell1Edit1
12:13 PM

Read the output file to retrieve the result: /tmp/claude/-Users-challen-www-usingandunderstanding-ai/tasks/b81c7f8.output

That's expected - exit code 137 is from me killing the background server with KillShell. Nothing to worry about.

12:18 PM

Your task

First, run git status, git diff, and git log --oneline -10 to understand the current state.

Then add and commit all modified files with a descriptive message. Break the changes into multiple commits if appropriate. If there are untracked files, ask if they should be added or added to the appropriate .gitignore file. The user may also want to take over at this point, so provide an abort option as well. Always check changes for unnecessary debugging statements or logging that might have been accidentally included. Prompt the user if you find any, and offer to remove each one by one. Do not use interactive git staging (git add -p) as it does not work.

No debugging statements found in the changes. Here's the summary:

Modified files:

  • .env.development - Add DATABASE_URL and Microsoft Graph API settings
  • apps/web/app/page.tsx - Simplify to login button only
  • apps/web/auth.ts - Use getAdapter() and unified AZURE_* env vars
  • apps/web/lib/constants.ts - Cookie domain for local dev
  • apps/web/next.config.ts - Add allowedDevOrigins for NGINX proxy
  • package.json - Add db:* scripts and docker compose to dev
  • packages/auth/src/adapter.ts - Configure DrizzleAdapter with schema tables

Untracked files:

  • docker-compose.yml - PostgreSQL with pgvector
  • docker/init.sql - Enable vector extension

This is a single logical change (setting up auth with database). Should I commit everything together?

Committed as 37ad2de. Working tree is clean.

Bash6Read2AskUserQuestion1
12:22 PM

Please don't redirect to the dashboard when logged in. I want to work on the index page.

Done. Removed the redirect - you can now work on the index page while logged in. The session is still available if you need it for conditional rendering.

Edit1
12:23 PM

OK. Now I want to work on the syllabus. Currently the link is broken, the redirect still uses the old semester format.

Found it. The redirect uses /${year}/${term}/syllabus but routes expect /spring2025/syllabus format. There's already a helper for this.

Fixed. Now /syllabus will redirect to /spring2025/syllabus.

Note: The current semester is set to Spring 2025 in content/semesters.ts. Should I update it to Spring 2026?

Read2Glob1Edit1
12:24 PM

Error Type

Build Error

Error Message

Error evaluating Node.js code

Build Output

./content/spring2025/syllabus.mdx Error evaluating Node.js code Error: Cannot find module 'rehype-slug' Require stack:

  • ~/www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js
  • ~/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/compiled/loader-runner/LoaderRunner.js
  • ~/www/usingandunderstanding.ai/apps/web/.next/dev/build/chunks/[root-of-the-server]__6e020478._.js
  • ~/www/usingandunderstanding.ai/apps/web/.next/dev/build/chunks/[turbopack]_runtime.js
  • /www/usingandunderstanding.ai/apps/web/.next/dev/build/webpack-loaders.js [at Module._resolveFilename (node:internal/modules/cjs/loader:1421:15)] [at require.resolve (node:internal/modules/helpers:163:19)] [at importPluginForPath (/www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js:9:24)] [at importPlugin (/www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js:23:20)] [at /www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js:41:37] [at <anonymous>] [at getOptions (/www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js:41:21)] [at Object.nextMdxLoader (/www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js:61:3)] [at LOADER_EXECUTION (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/compiled/loader-runner/LoaderRunner.js:1:4134)] [at runSyncOrAsync (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/compiled/loader-runner/LoaderRunner.js:1:4145)]

Next.js version: 16.1.1 (Turbopack)

The MDX plugins are configured as strings but not installed. Let me check what's needed.

Read1
12:24 PM

Sorry. The current semester is Spring 2026. Remove all references to 2025.

Spring 2026 doesn't have a config.ts file - it has markdown files instead (syllabus.md, weeks.md, activities.md). The old spring2025 had a TypeScript config structure.

Do you want me to:

  1. Create a config.ts for spring2026 based on the existing markdown content?
  2. Remove the config import from content.ts for now while you work on the structure?
Bash7Edit1Read1
12:26 PM

Do we need config.ts? What's it for?

The config.ts defines course structure:

  • Course metadata (title, instructors)
  • Weeks and meetings schedule
  • Used for navigation, listing meetings, etc.

Looking at content.ts, it powers:

  • getMeetings() - list all class meetings
  • getMeeting(slug) - get a specific meeting
  • getWeeks() - get week structure

If you're just showing a syllabus page for now, you don't need it yet. Want me to simplify content.ts to remove the config dependency until you need the meetings/weeks structure?

Bash1
12:26 PM

What happened to the syllabus I added? Now it says coming soon.

The page looks for syllabus.mdx but your spring2026 has syllabus.md. Let me check:

Read1Bash1
12:27 PM

Let's rename to mdx. Also create the config.ts file for Spring 2026.

12:27 PM

Continue.

Now let me install the missing MDX plugins.

Done. Changes made:

  1. Renamed syllabus.md to syllabus.mdx
  2. Created config.ts for Spring 2026
  3. Updated content.ts to import from spring2026
  4. Installed missing MDX plugins (rehype-slug, rehype-autolink-headings, rehype-pretty-code, remark-gfm)

The syllabus should now render at /spring2026/syllabus.

Bash3Write1Edit1
12:28 PM

GET /spring2026/syllabus 200 in 15ms (compile: 3ms, proxy.ts: 3ms, generate-params: 14µs, render: 10ms) @repo/web:dev: ⨯ ./content/spring2026/syllabus.mdx @repo/web:dev: Error evaluating Node.js code @repo/web:dev: Error: Cannot find module 'rehype-slug' @repo/web:dev: Require stack: @repo/web:dev: - /www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js @repo/web:dev: - /www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/compiled/loader-runner/LoaderRunner.js @repo/web:dev: - /www/usingandunderstanding.ai/apps/web/.next/dev/build/chunks/[root-of-the-server]__6e020478._.js @repo/web:dev: - /www/usingandunderstanding.ai/apps/web/.next/dev/build/chunks/[turbopack]_runtime.js @repo/web:dev: - /www/usingandunderstanding.ai/apps/web/.next/dev/build/webpack-loaders.js @repo/web:dev: [at Module._resolveFilename (node:internal/modules/cjs/loader:1421:15)] @repo/web:dev: [at require.resolve (node:internal/modules/helpers:163:19)] @repo/web:dev: [at importPluginForPath (/www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js:9:24)] @repo/web:dev: [at importPlugin (/www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js:23:20)] @repo/web:dev: [at /www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js:41:37] @repo/web:dev: [at <anonymous>] @repo/web:dev: [at getOptions (/www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js:41:21)] @repo/web:dev: [at Object.nextMdxLoader (/www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js:61:3)] @repo/web:dev: [at LOADER_EXECUTION (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/compiled/loader-runner/LoaderRunner.js:1:4134)] @repo/web:dev: [at runSyncOrAsync (/www/usingandunderstanding.ai/node_modules/.bun/next@16.1.1+8fba677b1d6253e6/node_modules/next/dist/compiled/loader-runner/LoaderRunner.js:1:4145)] @repo/web:dev:

The packages were installed in apps/web but the MDX loader resolves from the root. Let me install them at the root level.

Try again - the plugins are now installed at the root level where the MDX loader can find them.

Bash1
12:29 PM

Wait, that makes no sense. And it doesn't solve the problem either.

You're right. The issue is Turbopack + string-based plugin names having trouble with module resolution. Let me try removing the plugins to see if the syllabus renders without them.

Try again - removed all MDX plugins. Let's see if it renders without the fancy formatting first.

Edit1
12:29 PM

✓ Starting... @repo/web:dev: ✓ Ready in 492ms @repo/web:dev: ⨯ ./content/spring2026/syllabus.mdx @repo/web:dev: Error evaluating Node.js code @repo/web:dev: 4:2: syllabus.mdx:4:2: Unexpected character ! (U+0021) before name, expected a character that can start a name, such as a letter, $, or _ (note: to create a comment in MDX, use {/* text */})

The issue is HTML comments (<!-- -->) in the MDX file. MDX uses JSX-style comments {/* */}.

Bash1Edit1
12:30 PM

Let's remove that bit entirely. It's no longer needed.

Done. Try again.

Edit1
12:30 PM

OK, now it's rendering, but we need to get the MDX plugins to work.

Let me try using actual imports instead of strings - that should work with proper module resolution.

Try now. I left out rehype-pretty-code for now since it's more complex - let's see if the basic plugins work first.

Edit2
12:31 PM

Nope. Same problem as before: ✓ Starting... @repo/web:dev: Error: loader ~/www/usingandunderstanding.ai/node_modules/.bun/@next+mdx@16.1.1+7dbd04c81aa74883/node_modules/@next/mdx/mdx-js-loader.js for match "{*,next-mdx-rule}" does not have serializable options. Ensure that options passed are plain JavaScript objects and values. @repo/web:dev: at ignore-listed frames

Turbopack requires serializable options (strings only), but can't resolve the string-based module names in this monorepo setup. Let's try disabling Turbopack for now.

Edit1
12:31 PM

No, that's also not acceptable. Do some research and solve this problem correctly. We can't be the first to encounter it.

Found the issue! The loader uses this.context (the MDX file's directory) to resolve plugins. For content/spring2026/syllabus.mdx, it's looking in content/spring2026/ which has no node_modules.

The issue is that @next/mdx resolves plugins from the MDX file's directory (content/spring2026/) which doesn't have node_modules.

Let me try a simple fix - symlink node_modules into the content directory:

Try now - I symlinked node_modules into the content/ directory so the MDX loader can find the plugins.

Sources:

WebFetch3WebSearch2Bash2Edit2Read1
12:34 PM

Really? That seems... awful. But it is working.

Agreed - it's a hack. The real issue is that @next/mdx's loader uses the MDX file's directory as the resolve base, which breaks for content outside app/.

Options for a cleaner solution later:

  1. Move MDX content into app/ directory structure
  2. Switch to next-mdx-remote which handles remote/external content better
  3. Wait for Next.js to fix the loader to use project root for resolution

For now the symlink works. Should I add a comment in the content directory explaining why it's there, or add it to .gitignore and document in CLAUDE.md?

12:35 PM

Let's discuss further. Does @next/mdx support hot reloading during development? If not then next-mdx-remote may be a better option anyway.

WebFetch2WebSearch1
12:36 PM

Sorry, my question is simply whether @next/mdx supports hot reload or not. Can you find out? Not hot refresh, actual hot reload where only the React content is refreshed.

No, @next/mdx does NOT support true hot reload for MDX files.

According to GitHub issue #13574, MDX files trigger a full page reload instead of Fast Refresh. This is a known limitation - while .tsx/.jsx components get proper HMR, MDX changes cause the entire page to reload.

So neither @next/mdx nor next-mdx-remote have hot reload out of the box. Both require workarounds like next-remote-refresh (websocket-based file watching) to achieve it.

Given that:

  • Both need workarounds for HMR
  • next-mdx-remote hasn't been updated in 2 years
  • We need a symlink hack for @next/mdx with Turbopack

The current setup with @next/mdx is probably fine for now. The symlink is ugly but it works, and switching to next-mdx-remote wouldn't give us hot reload either without additional setup.

WebSearch1
12:39 PM

Well, I'm testing edits now and reload is pretty smooth, so I agree with staying with @next/mdx.

Good to hear. The full page reload is probably fast enough with Turbopack that it feels smooth.

Should we commit the current changes? We have:

  • Renamed syllabus.md to syllabus.mdx
  • Created config.ts for Spring 2026
  • Updated semesters.ts to Spring 2026
  • Updated content.ts import to spring2026
  • Added node_modules symlink in content/
  • Restored MDX plugins in next.config.ts
  • Fixed syllabus redirect
  • Removed redirect from home page
12:39 PM

Your task

First, run git status, git diff, and git log --oneline -10 to understand the current state.

Then add and commit all modified files with a descriptive message. Break the changes into multiple commits if appropriate. If there are untracked files, ask if they should be added or added to the appropriate .gitignore file. The user may also want to take over at this point, so provide an abort option as well. Always check changes for unnecessary debugging statements or logging that might have been accidentally included. Prompt the user if you find any, and offer to remove each one by one. Do not use interactive git staging (git add -p) as it does not work.

No debugging statements found. Here's the summary:

Modified files:

  • apps/web/app/page.tsx - Remove redirect to dashboard
  • apps/web/app/syllabus/page.tsx - Fix redirect to use getCurrentSemesterPath()
  • apps/web/lib/content.ts - Import from spring2026 instead of spring2025
  • apps/web/next.config.ts - Restore MDX plugins (string-based)
  • apps/web/package.json - Add MDX plugin dependencies
  • content/semesters.ts - Update to Spring 2026
  • package.json - Add MDX plugin dependencies at root

Deleted:

  • content/spring2025/ - Removed old semester

New files:

  • content/spring2026/config.ts - Course config for Spring 2026
  • content/spring2026/syllabus.mdx - Renamed from .md
  • content/node_modules - Symlink for MDX plugin resolution

Committed as e896327. Working tree is clean.

Bash6AskUserQuestion1